<template>
    <div class="app-container">
        <h2 style="text-align: center;">发布新课程</h2>

        <el-steps :active="3" process-status="wait" align-center style="margin-bottom:40px;">
            <el-step title="填写课程基本信息"/>
            <el-step title="创建课程大纲"/>
            <el-step title="发布课程"/>
        </el-steps>

        <div class="ccInfo">
            <img :src="coursePublish.cover">
            <div class="main">
                <h2>{{ coursePublish.title }}</h2>

                <p class="gray"><span>共{{ coursePublish.lessonNum }}课时</span></p>
                <p><span>所属分类：{{ coursePublish.subjectLevelOne }} — {{coursePublish.subjectLevelTwo }}</span></p>
                <p>课程讲师：{{ coursePublish.teacherName }}</p>

                <h3 class="red">￥{{ coursePublish.price }}</h3>
            </div>
        </div>

        <div>
            <el-button @click="previous">返回修改</el-button>
            <el-button :disabled="saveBtnDisabled" type="primary" @click="publish">发布课程</el-button>
        </div>
    </div>
</template>

<script>
import * as course from '@/api/edu/course'

export default {
    data() {
        return{
            saveBtnDisabled:false,
            courseId: '',
            coursePublish: {}
        }
    },
    created(){
        //获取路由中的课程id
        if (this.$route.params && this.$route.params.id) {
            this.courseId = this.$route.params.id

            //根据课程id调用接口方法
            this.getCoursePublishId()
        }
    },
    methods:{
        //根据课程id查询的方法
        getCoursePublishId(){
            course.getPublishCourseInfo(this.courseId)
                .then(response => {
                    this.coursePublish = response.data.publishCourse
                })
        },
        
        previous(){
            //跳轉到第二步
            this.$router.push({path:'/course/chapter/1'})
        },
        publish(){
            //发布
            course.publishCourse(this.courseId)
                .then(response => {
                    //提示信息
                    this.$message({
                        type: 'success',
                        message: '发布成功!'
                    });
                    
                    //跳轉到發佈
                    this.$router.push({path:'/course/list'})
                })
        }
    }
}
</script>

<style scoped>
.ccInfo {
    background: #f5f5f5;
    padding: 20px;
    overflow: hidden;
    border: 1px dashed #DDD;
    margin-bottom: 40px;
    position: relative;
}
.ccInfo img {
    background: #d6d6d6;
    width: 500px;
    height: 278px;
    display: block;
    float: left;
    border: none;
}
.ccInfo .main {
    margin-left: 520px;
}
.ccInfo .main h2 {
    font-size: 28px;
    margin-bottom: 30px;
    line-height: 1;
    font-weight: normal;
}
.ccInfo .main p {
    margin-bottom: 10px;
    word-wrap: break-word;
    line-height: 24px;
    max-height: 48px;
    overflow: hidden;
}
.ccInfo .main p {
    margin-bottom: 10px;
    word-wrap: break-word;
    line-height: 24px;
    max-height: 48px;
    overflow: hidden;
}
.ccInfo .main h3 {
    left: 540px;
    bottom: 20px;
    line-height: 1;
    font-size: 28px;
    color: #d32f24;
    font-weight: normal;
    position: absolute;
}
</style>